JPH0356980U - - Google Patents
Info
- Publication number
- JPH0356980U JPH0356980U JP11858989U JP11858989U JPH0356980U JP H0356980 U JPH0356980 U JP H0356980U JP 11858989 U JP11858989 U JP 11858989U JP 11858989 U JP11858989 U JP 11858989U JP H0356980 U JPH0356980 U JP H0356980U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- display tube
- fluorescent display
- drive
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案の原理図、第２図は本考案の一
実施例を示すタイムチヤート、第３図はダイナミ
ツク駆動方式の説明図、第４図は従来の蛍光表示
管駆動回路の説明図である。
図中、１……安定化回路、２……スイツチング
回路、３……ドライバ回路、４……マイクロコン
ピユータ、ＶＦ……蛍光表示管、Ｆ……フイラメ
ント、Ｇ……グリツド、ａ，ｂ，ｃ……セグメン
トである。
Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a time chart showing an embodiment of the invention, Fig. 3 is an explanatory diagram of a dynamic drive system, and Fig. 4 is an explanatory diagram of a conventional fluorescent display tube drive circuit. It is. In the figure, 1... Stabilization circuit, 2... Switching circuit, 3... Driver circuit, 4... Microcomputer, VF... Fluorescent display tube, F... Filament, G... Grid, a, b, c. ...This is a segment.
Claims (1)
源から安定化されたフイラメント駆動電圧を発生
する安定化回路１と、 該安定化回路の出力電圧をオンの期間だけフイ
ラメントＦに印加するスイツチング回路２と、 該スイツチング回路を間欠的に駆動するドライ
バ回路３とを備えてなることを特徴とする蛍光表
示管の駆動回路。 ２ スイツチング回路２をダイナミツク駆動方式
のブランキング期間だけオンにすることを特徴と
する請求項１記載の蛍光表示管の駆動回路。 ３ グリツドＧの駆動時間を制御して輝度調整を
行うことを特徴とする請求項１記載の蛍光表示管
の駆動回路。[Claims for Utility Model Registration] 1. A stabilizing circuit 1 that generates a stabilized filament drive voltage from the positive power supply applied to the grid G of the fluorescent display tube VF, and the output voltage of the stabilizing circuit only during the ON period. 1. A drive circuit for a fluorescent display tube, comprising: a switching circuit 2 for applying an electric voltage to a filament F; and a driver circuit 3 for intermittently driving the switching circuit. 2. The drive circuit for a fluorescent display tube according to claim 1, wherein the switching circuit 2 is turned on only during a blanking period of the dynamic drive method. 3. The drive circuit for a fluorescent display tube according to claim 1, wherein brightness is adjusted by controlling the driving time of the grid G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11858989U JPH0356980U (en) | 1989-10-09 | 1989-10-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11858989U JPH0356980U (en) | 1989-10-09 | 1989-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0356980U true JPH0356980U (en) | 1991-05-31 |
Family
ID=31666743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11858989U Pending JPH0356980U (en) | 1989-10-09 | 1989-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294726A (en) * | 2003-03-26 | 2004-10-21 | Sanyo Electric Co Ltd | Driving circuit for fluorescent display tube |
| JP2006171493A (en) * | 2004-12-17 | 2006-06-29 | Rhythm Watch Co Ltd | Display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167191A (en) * | 1980-05-28 | 1981-12-22 | Mitsubishi Electric Corp | Intensity switching circuit for fluorescent display tube |
| JPS5824191A (en) * | 1981-08-06 | 1983-02-14 | 鹿児島日本電気株式会社 | Driving of multidigital fluorescent indicator tube |
-
1989
- 1989-10-09 JP JP11858989U patent/JPH0356980U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167191A (en) * | 1980-05-28 | 1981-12-22 | Mitsubishi Electric Corp | Intensity switching circuit for fluorescent display tube |
| JPS5824191A (en) * | 1981-08-06 | 1983-02-14 | 鹿児島日本電気株式会社 | Driving of multidigital fluorescent indicator tube |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294726A (en) * | 2003-03-26 | 2004-10-21 | Sanyo Electric Co Ltd | Driving circuit for fluorescent display tube |
| JP4741786B2 (en) * | 2003-03-26 | 2011-08-10 | 三洋電機株式会社 | Fluorescent display tube drive circuit |
| JP2006171493A (en) * | 2004-12-17 | 2006-06-29 | Rhythm Watch Co Ltd | Display device |
| JP4566724B2 (en) * | 2004-12-17 | 2010-10-20 | リズム時計工業株式会社 | Display device |
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